Model Interpretation

3500/25‑XX‑XX‑XX

3500/25: Enhanced Keyphasor Module

1st XX (Input Type):

01: Proximity probe input (‑24 VDC sensor power)

02: Magnetic pickup input (passive)

2nd XX (Output/Connector):

01: Coaxial + Euro‑style buffered outputs

02: Euro‑style only

3rd XX (Certification):

00: Standard

01: CSA/ATEX/IECEx (Zone 2)

Common P/N: 3500/25‑01‑01‑01 (PWA 149369‑01, replaces legacy 125792‑01)

Technical Parameters

Mechanical

Form Factor: Half‑height (fits any 3500/05 slot)

Dimensions (H×W×D): 119.9 mm × 24.4 mm × 256.5 mm

Weight: 0.34–0.46 kg

Power Consumption: 3.2 W typical

Electrical – Inputs

Channels: 2 independent inputs

Transducer Types: Proximity probes (‑24 VDC powered) or magnetic pickups (passive)

Signal Ranges:

Non‑isolated: +0.8 V to ‑21.0 V

Isolated: +5 V to ‑11 V

Input Impedance: ≥ 21.8 kΩ

Sensor Power: ‑24 VDC, 40 mA max per channel

Electrical – Processing & Outputs

Frequency Range: 0.017–20 kHz (1–1,200,000 rpm)

Speed Accuracy: ±1 rpm (0.017–60 Hz); ±1% (61 Hz–20 kHz)

Buffered Outputs: 2 channels; 504 Ω max impedance

Threshold: Auto/manual configurable

Environmental

Operating Temp: ‑30°C to +65°C (‑22°F to +150°F)

Storage Temp: ‑40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: SIL 2, CE, UL, CSA, ATEX/IECEx (Zone 2)

Compatibility

Rack: 3500/05 (all slots)

Monitors: All 3500 series (vibration, speed, TDI)

Max Keyphasors: 4 per system (8 paired)

Core Functions

Precision Phase Reference: Generates digital Keyphasor pulses from shaft marks, enabling 1X vibration amplitude/phase and vector measurements.

Dual‑Channel Redundancy: Two independent inputs for redundant sensor setups; supports mixed probe/pickup inputs.

High‑Speed Processing: Tracks up to 20 kHz events (1.2M rpm) for high‑speed turbomachinery.

Buffered Outputs: Isolated, low‑impedance outputs for external data acquisition or DCS connection.

Auto/Manual Threshold: Adapts to varying signal levels; backward‑compatible with legacy Keyphasor modules.

Applications

Power Generation: Steam/gas turbines, generators (TSI for vibration, speed, phase).

Oil & Gas: Compressors, pumps, turbines (critical machinery protection).

Heavy Industry: Large motors, gearboxes, process machinery (predictive maintenance).

Condition Monitoring: System 1 integration for real‑time phase/speed trending and diagnostics。